References:

Safety Websites:
http://www.fitsugar.com/Safety-Tips-Exercising-Alone-17874664
http://www.epigee.org/fitness/safety.html
http://www.fast-diet-plans.com/620/exercise-safety-tips-for-daily-workouts/
http://1homefitness.blogspot.com/2007/08/safety-tips-for-strength-training.html
http://familydoctor.org/online/famdocen/home/healthy/physical/sports/198.html
http://www.sportsinjuryclinic.net/cybertherapist/stretching/allstretches.php

Fitness websites:
http://www.healthguidance.org/entry/1223/1/The-Fitness-Principles.html
http://www.livestrong.com/exercise-and-fitness-guide/
http://www.muscle-fitness-tips.net/index.html
http://www.topendsports.com/fitness/index.htm
http://www.askthetrainer.com/5-components-of-physical-fitness.html
www.exrx.net
http://www.livestrong.com/tools/body-fat-calculator/
http://www.myfit.ca/fitnessprograms/viewall.asp?contains=free_fitness_programs

Muscles and online quizzes:
http://wserver.flc.losrios.edu/~willson/fitnessHandouts/muscleGroups.html
http://www.bodybuilding.com/fun/anatomy.htm
http://selecthealth.org/stayhealthy/healtheducation/learning/pages/exercise.aspx
http://www.purposegames.com/game/human-muscle-groups-quiz